536 



Stroinata scattered, orbicular, convex, 2-3 mm. diam., formed of 

 the unaltered pubstance of the bark, which is scarcely or only slightly 

 discolored and not circumscribed liy any black line. Pei-ithecia gen- 

 erally 5-12, subcii-cinate, globose, necks converging, with their short- 

 eylindi-ical, subconical, white-pulverulent ostiola erumpent through a 

 whitish disk which is soon obliterated. Asci (p. sp.) 56-60 x 6-7 fi, 

 aparaphygate, 8-spored. Sporidia l)iseriate, fusoid, 4-nucleate, becom- 

 ing uniseptate or indistinctly 3-septate, 12-15 x 3 //, with a slight hair- 

 like appendage at each end, readily seen in the young sporidium, but 

 finally absorbed. 



On dead Rhus copallina and R. typhina, common. 



We have seen no authentic specc. of V. alhovelata, B. & C, but 

 the diagnosis of that species does not enable one to separate it from 

 the Sphoeria aculeans, Schw., and (sec. Farlow) the specc. of F. alho- 

 velata, B. & C. in Herb. Curtis, are the same as Sphcsria aculeans, 

 Schw. Valsa Rhois, Cke., is certainly the same as shown by the 

 ppecc. in Cooke's exsiccati cited. The two additional septa sometimes 

 seen, are only pseudosepta, being only the dividing line between two 

 adjacent nuclei. 



Cr. Pennsylvanica, (B. & C.) 



yalsa Pennsylvanica, B. & C, Grev. IV, p. loo. 

 DiaporUie cylindrospora, Pk. 38th Rep. p. 104, 

 7 'alsa prunicola, Pk. 33rd Rep. p, 34. 

 Calospara Pennsylvanica, Sacc. Sj'U. 3700. 

 Valsa {Calospora) Pennsylvanica, Cke. Syn. 2043. 



Pustules valsoid, somewhat prominent, erumpent, scattered. Peri- 

 thccia numerous, 15-30 or more, crowded, covered by the thin, black- 

 cued surface of the inner liark, the ostiola rather long, stout, cylin- 

 drical, rounded at the tips, crowded, exSerted. Asci narrow, subfusi- 

 forui, 35-50x5-7 fi. S])oridia subcylindrical, crowded or biseriate, 

 4-nucleate, hyaline, 13-19 x 3-4 p. (25 p. long, Berk.). 



On dead branches of Primus Pennsylvanica, Adirondack Mts., 

 X. Y., and on P. Americana, Iowa. 



The original description of this species in Grevillea is as follows: 

 '' Bursting transversely. Perithecia in the center of a facette. Spo- 

 ridia narrow, oblong, sometimes wide at one end, sometimes slightly 

 curved, triseptate. 25 p. long. On Cerasus Pennsylvanica, mountains 

 of New York (Berk. 1. c.)." 



Cr. Caryse, Pk. 38th Rep. p. 106, tab. 2, figs. 28-31. 



Pustules scattered, covered by the* epidermis, then erumpent, cir- 

 cumscribed l)y a black line ur at length covered by a black crust 

 beneath the epidermis. Perithecia 4-12 in a pustule, globose or 



